插入排序

import java.util.Arrays;

public class InsertionSort {

    private static void insertionSort(int[] nums) {
        for (int i = 1, j, n = nums.length; i < n; ++i) {
            int num = nums[i];
            for (j = i - 1; j >=0 && nums[j] > num; --j) {
                nums[j + 1] = nums[j];
            }
            nums[j + 1] = num;
        }
    }

    public static void main(String[] args) {
        int[] nums = {1, 2, 7, 9, 5, 8};
        insertionSort(nums);
        System.out.println(Arrays.toString(nums));
    }
}

function insertionSort(inputArr) {
    let len = inputArr.length;
    for (let i = 1; i <= len - 1; i++) {
        let temp = inputArr[i];
        let j = i - 1;
        while (j >= 0 && inputArr[j] > temp) {
            inputArr[j + 1] = inputArr[j];
            j--;
        }
        inputArr[j + 1] = temp;
    }
    return inputArr;
}

let arr = [6, 3, 2, 1, 5];
console.log(insertionSort(arr));

package main

import "fmt"

func insertionSort(nums []int) {
	for i, n := 1, len(nums); i < n; i++ {
		j, num := i-1, nums[i]
		for ; j >= 0 && nums[j] > num; j-- {
			nums[j+1] = nums[j]
		}
		nums[j+1] = num
	}
}

func main() {
	nums := []int{1, 2, 7, 9, 5, 8}
	insertionSort(nums)
	fmt.Println(nums)
}

#include <iostream>
#include <vector>

using namespace std;

void printvec(const vector<int> &vec, const string &strbegin = "", const string &strend = "")
{
    cout << strbegin << endl;
    for (auto val : vec)
    {
        cout << val << "\t";
    }

    cout << endl;
    cout << strend << endl;
}

void insertsort(vector<int> &vec)
{
    for (int i = 1; i < vec.size(); i++)
    {
        int j = i - 1;
        int num = vec[i];
        for (; j >= 0 && vec[j] > num; j--)
        {
            vec[j + 1] = vec[j];
        }

        vec[j + 1] = num;
    }

    return;
}

int main()
{
    vector<int> vec = {9, 8, 7, 6, 5, 4, 3, 2, 1, 0};
    printvec(vec);
    insertsort(vec);
    printvec(vec, "after insert sort");
    return (0);
}

fn insertion_sort(nums: &mut Vec<i32>) {
    let n = nums.len();
    for i in 1..n {
        let mut j = i - 1;
        let temp = nums[i];
        while j >= 0 as usize && nums[j] > temp {
            nums[j + 1] = nums[j];
            j -= 1;
        }
        nums[j + 1] = temp;
    }
}

fn main() {
    let mut nums = vec![1, 2, 7, 9, 5, 8];
    insertion_sort(&mut nums);
    println!("{:?}", nums);
}